An indoor dual-end cooling and heating radiant system

Abstract

This utility model relates to the field of indoor radiant cooling and heating technology, specifically an indoor dual-end radiant cooling and heating system, including an air source heat pump mechanism and an exchange tank, further comprising a top-mounted radiant cooling and heating mechanism and a floor-mounted radiant cooling and heating mechanism. The top-mounted radiant cooling and heating mechanism is located on the roof of the building and can receive and return the heat exchange fluid in the exchange tank, radiating cold / heat to the interior space from the top. The floor-mounted radiant cooling and heating mechanism is laid on the floor of the building and can receive and return the heat exchange fluid in the exchange tank, radiating cold / heat to the interior space from the floor. It employs windless radiant cooling / heating to provide windless cooling / heating, avoiding direct airflow and cold air blowing on the human body during cooling, thus reducing or eliminating the likelihood of air conditioning sickness induced by existing air conditioners. For heating, it provides radiant heating from both the top and floor, improving overall heating efficiency.

Description

Technical Field

[0001] This utility model relates to the field of indoor radiant cooling and heating technology, specifically an indoor dual-end radiant cooling and heating system. Background Technology

[0002] Current indoor temperature control systems mainly rely on two separate devices—floor heating and air conditioning—to achieve heating and cooling functions. However, both technologies currently have certain limitations:

[0003] Underfloor heating can be divided into underfloor heating systems and radiator systems. Both mainly generate heat through underfloor heat radiation. Although they can provide a uniform thermal environment, their functions are limited and they can only heat from one dimension. There is room for improvement in overall heating efficiency. At the same time, they rely on gas boilers or electric heating equipment, resulting in high energy costs.

[0004] Air conditioning systems achieve cooling through air convection, but forced air circulation can easily lead to an imbalance in indoor humidity and resuspension of air pollutants. Furthermore, direct cold air blowing can easily cause symptoms such as dryness of the respiratory mucosa and decreased immunity in the elderly and children.

[0005] Although some systems attempt to achieve synergy between cooling and heating through dual refrigerant supply, such as a refrigerant-water system, Chinese patent CN210624797U discloses a displacement ventilation ground radiant cooling and heating system, which is essentially a refrigerant-water system. However, its core is still an independently operating refrigerant-water dual circulation architecture, which requires two sets of refrigerant pipelines and control systems. At the same time, it cannot solve the problem of direct cold air blowing from the air conditioner during cooling. Utility Model Content

[0006] The purpose of this utility model is to provide an indoor dual-end cooling and heating radiant system to address the problems mentioned above.

[0007] The technical solution adopted by this utility model is as follows: an indoor dual-end cooling and heating radiation system, including an air source heat pump mechanism and an exchange tank. The air source heat pump mechanism is located outdoors and can exchange heat with the exchange tank. It also includes a top cooling and heating radiation mechanism and a ground cooling and heating radiation mechanism.

[0008] The top-mounted cooling and heating radiation mechanism is located on the top of the building and can receive and return the heat exchange liquid in the heat exchange tank, providing cold / heat radiation to the interior space of the building from the top.

[0009] The ground cooling and heating radiation mechanism is laid on the floor of the house and can receive and return the heat exchange liquid in the heat exchange tank, so as to provide cold / heat radiation to the interior space of the house from the ground.

[0010] Furthermore, the top cooling and heating radiant mechanism includes a top radiant end, a top water distributor, and a top water valve;

[0011] The top radiating end is installed on the roof of the house and faces the ground. A top heat exchange pipe is installed in the top radiating end, and the liquid inlet end of the top heat exchange pipe is connected to the top water separator, and the liquid outlet end of the top heat exchange pipe is connected to the return mechanism.

[0012] The top water valve is connected to the heat exchange liquid outlet of the heat exchange tank via a pipe;

[0013] The top water divider is connected to the top water valve.

[0014] Furthermore, the top water divider and top water valve are located in the interlayer between the top radiating end and the roof of the house.

[0015] Furthermore, the ground cooling and heating radiant mechanism includes a ground radiant end, a ground water distributor, and a ground water valve;

[0016] The ground radiant end is laid on the floor of the house and faces the top of the house. A ground heat exchange pipe is installed in the ground radiant end, and the liquid inlet end of the ground heat exchange pipe is connected to the ground water distributor, and the liquid outlet end of the ground heat exchange pipe is connected to the return mechanism.

[0017] The ground water valve is connected to the heat exchange liquid outlet of the heat exchange tank via a pipeline;

[0018] The ground water distributor is connected to the ground water valve.

[0019] Furthermore, the ground water distributor and ground water valve are located in the interlayer between the ground radiating end and the building floor.

[0020] Furthermore, the reflux mechanism includes a reflux pipe, a one-way valve, a circulation pump, and a ball valve, and the one-way valve, circulation pump, and ball valve are sequentially arranged on the reflux pipe along the flow direction of the heat exchange liquid;

[0021] The top heat exchange pipe and the ground heat exchange pipe are connected to one end of the return pipe, and the other end of the return pipe is connected to the heat exchange liquid return port of the exchange tank.

[0022] Furthermore, the air source heat pump mechanism includes a compressor, a condenser, a refrigerant tank, and a filter;

[0023] The refrigerant storage device is used to store refrigerant and is connected to the filter via a pipe;

[0024] The filter is connected to the refrigerant coil inside the exchange tank via a pipe;

[0025] One end of the compressor is connected to the refrigerant coil via a pipe, and the other end is connected to the condenser via a pipe;

[0026] The condenser is connected to the media storage tank via a pipe.

[0027] Furthermore, the air-source heat pump mechanism also includes a pressure controller and a pressure valve;

[0028] The pressure controller is used to collect compressor pressure;

[0029] The pressure valve is located on the pipeline from which the refrigerant flows back from the compressor to the refrigerant coil.

[0030] Furthermore, it also includes a storage tank containing heat exchange fluid, which is connected to the heat exchange tank via a pipeline.

[0031] Furthermore, the heat exchange fluid is deionized water or mineral oil.

[0032] The beneficial effects of this utility model include at least one of the following;

[0033] 1. An indoor dual-end cooling and heating radiant system is provided, comprising a top-mounted cooling and heating radiant mechanism and a ground-mounted cooling and heating radiant mechanism, wherein both cooling and heating radiant mechanisms employ windless cooling / heating radiation to provide windless cooling / heating to the indoor space.

[0034] 2. In terms of cooling, it avoids air convection during cooling, which causes cold air to blow directly onto the human body, thereby avoiding or reducing the chance of air conditioning sickness induced by existing air conditioners.

[0035] 3. In terms of heating, it can provide heat radiation from both the top and the ground, thereby improving the overall heating efficiency.

[0036] 4. The entire indoor dual-end cooling and heating radiant system uses the same air source heat pump mechanism and heat exchange tank for cooling and heating, avoiding the need to configure two sets of refrigerant pipelines and control systems, and reducing the difficulty of installation and laying. Attached Figure Description

[0037] Figure 1 A schematic diagram of the frame structure of an indoor dual-end cooling and heating radiant system;

[0038] Figure 2 A schematic diagram of an indoor dual-end cooling and heating radiant system;

[0039] Figure 3 This is a schematic diagram of the exchange tank structure.

[0040] In the picture:

[0041] 1 is the house, 2 is the roof cooling and heating radiation mechanism, 3 is the ground cooling and heating radiation mechanism, 4 is the heat exchange tank, 5 is the air source heat pump mechanism, 6 is the heat exchange tank shell, 7 is the refrigerant coil, 8 is the first temperature sensor, and 9 is the second temperature sensor. Detailed Implementation

[0042] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can typically be arranged and designed in various different configurations.

[0043] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0044] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0045] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0046] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only used for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0047] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0048] like Figure 1and Figure 2 As shown, an indoor dual-end cooling and heating radiant system includes an air source heat pump mechanism 5 and an exchange tank 4. The air source heat pump mechanism 5 is located outdoors and can exchange heat with the exchange tank 4. The system also includes a top cooling and heating radiant mechanism 2 and a ground cooling and heating radiant mechanism 3.

[0049] The top cooling and heating radiation mechanism 2 is located on the top of the house 1 and can receive and return the heat exchange liquid in the heat exchange tank 4, so as to provide cold / heat radiation to the interior space of the house 1 from the top.

[0050] The ground cooling and heating radiation mechanism 3 is laid on the ground of the house 1 and can receive and return the heat exchange liquid in the heat exchange tank 4, so as to provide cold / heat radiation to the interior space of the house 1 from the ground.

[0051] The purpose of this design is to provide an indoor dual-end cooling and heating radiant system, comprising both a top-mounted cooling and heating radiant mechanism and a floor-mounted cooling and heating radiant mechanism, with both mechanisms using cold / heat radiation to provide windless cooling / heating. In terms of cooling, this avoids direct airflow of cold air onto people during cooling, thus reducing or eliminating the likelihood of air conditioning-related illnesses. For heating, it provides radiant heating from both the top and floor, improving overall heating efficiency. The entire indoor dual-end cooling and heating radiant system uses a single air-source heat pump mechanism and heat exchange tank for both cooling and heating, eliminating the need for two separate refrigerant piping and control systems, and reducing the difficulty of installation.

[0052] It should also be noted that both cold radiation and thermal radiation are forms of energy transfer. Thermal radiation is the active release of energy from a high-temperature object to a low-temperature object. In this embodiment, during the heating mode, the top-mounted cooling and heating radiation mechanism and / or the ground-mounted cooling and heating radiation mechanism release heat towards the indoor area, thereby raising the temperature of the indoor area. Cold radiation, in principle, is the opposite of thermal radiation. It is the absorption of energy from a high-temperature environment by a low-temperature object. In this embodiment, during the cooling mode, the top-mounted cooling and heating radiation mechanism and / or the ground-mounted cooling and heating radiation mechanism absorb heat from the indoor area, thereby lowering the indoor temperature.

[0053] In this embodiment, the top cooling and heating radiant mechanism 2 includes a top radiant end, a top water distributor, and a top water valve;

[0054] The top radiating end is installed on the top of the house 1 and faces the ground of the house 1. A top heat exchange pipe is provided in the top radiating end, and the liquid inlet end of the top heat exchange pipe is connected to the top water separator, and the liquid outlet end of the top heat exchange pipe is connected to the return mechanism.

[0055] The top water valve is connected to the heat exchange liquid outlet of the heat exchange tank 4 via a pipe;

[0056] The top water divider is connected to the top water valve.

[0057] It should be noted that in this embodiment, the top radiating end can be in the form of an aluminum ceiling panel, which is installed and fixed to the roof of the house through prefabrication. Then, a top water pipe is laid inside the aluminum ceiling panel or on the side facing the roof of the house, and a heat exchange fluid is introduced into the top water pipe. Cooling or heating is achieved based on the temperature difference between the heat exchange fluid and the indoor environment. The top water distributor evenly distributes the heat exchange fluid output from the heat exchange tank to multiple top water pipes in multiple aluminum ceiling panels. The top water valve is used to control the heat exchange fluid entering the top water pipe.

[0058] It should also be noted that in actual use, in order to ensure that the cooling or heating is directed towards the interior, an insulation layer or other structure is usually laid on the top to reduce the effect of the heat exchange fluid on other areas. At the same time, the insulation layer and other structures are standard building designs, so they will not be discussed further.

[0059] In this embodiment, the ground cooling and heating radiation mechanism 3 includes a ground radiation end, a ground water distributor, and a ground water valve;

[0060] The ground radiant end is laid on the floor of the house 1 and faces the top of the house 1. A ground heat exchange pipe is installed in the ground radiant end, and the liquid inlet end of the ground heat exchange pipe is connected to the ground water distributor, and the liquid outlet end of the ground heat exchange pipe is connected to the return mechanism.

[0061] The ground water valve is connected to the heat exchange liquid outlet of the heat exchange tank 4 via a pipeline;

[0062] The ground water distributor is connected to the ground water valve.

[0063] It should be noted that the physical model of the ground cooling and heating radiant mechanism in this embodiment can refer to existing underfloor heating or radiator structures. The substantial difference is that the heat exchange fluid in the structure provided in this embodiment can both cool and heat, and the connection relationship in the ground cooling and heating radiant mechanism can refer to the above-mentioned top cooling and heating radiant mechanism.

[0064] Meanwhile, in this embodiment, the top water distributor and the top water valve are located in the interlayer between the top radiating end and the top of the house 1, and the ground water distributor and the ground water valve are located in the interlayer between the ground radiating end and the ground of the house 1.

[0065] The purpose of this design is to ensure that the corresponding pipes, manifolds and valves will not affect daily indoor use. In some specific usage scenarios, on-site staff or residents can also set them in areas that do not affect daily life, depending on the actual situation.

[0066] In this embodiment, the reflux mechanism includes a reflux pipe, a check valve, a circulation pump, and a ball valve, and the check valve, circulation pump, and ball valve are sequentially arranged on the reflux pipe along the flow direction of the heat exchange liquid;

[0067] The top heat exchange pipe and the ground heat exchange pipe are connected to one end of the return pipe, and the other end of the return pipe is connected to the heat exchange liquid return port of the exchange tank 4.

[0068] The purpose of this design is to prevent the backflow of the heat exchange fluid using a one-way valve, while the circulation pump provides power to the entire heat exchange fluid. Of course, in actual use, several additional power pumps can be added, such as setting a power pump in the top cooling and heating radiation mechanism so that the heat exchange fluid can enter the top cooling and heating radiation mechanism from the exchange tank. The same applies to the ground cooling and heating radiation mechanism. However, this requires consideration of energy consumption and noise issues, so it needs to be judged according to the actual use scenario.

[0069] It should also be noted that in actual use, a first temperature sensor 8 and a second temperature sensor 9 are also set up to collect the temperature inside the house. The first temperature sensor 8 is close to the top of the house, and the second temperature sensor 9 is close to the ground of the house. This allows the flow rate of the heat exchange fluid to be controlled according to the temperature, so as to avoid large temperature differences due to excessive flow rate, which would cause condensation on the top and ground cooling and heating radiant mechanisms. Of course, the condensation problem can also be overcome by coatings. For example, a porous moisture-absorbing coating can be applied to the surface of the plate-shaped top and ground radiant ends. The porous structure of the coating absorbs condensation water through capillary action and temporarily stores the water in the pores, which then evaporates after the ambient humidity decreases.

[0070] It should also be noted that, due to the presence of top water valves and ground water valves, in actual use, whether heating or cooling, the top radiant heating mechanism and the ground radiant heating mechanism, or either one of them, can be turned on simultaneously as needed.

[0071] This embodiment provides a specific composition of an air source heat pump mechanism, including a compressor, a condenser, a storage tank, and a filter;

[0072] The refrigerant storage device is used to store refrigerant and is connected to the filter via a pipe;

[0073] The filter is connected to the refrigerant coil 7 inside the exchange tank 4 via a pipe;

[0074] One end of the compressor is connected to the refrigerant coil 7 via a pipe, and the other end is connected to the condenser via a pipe;

[0075] The condenser is connected to the media storage tank via a pipe.

[0076] Meanwhile, the air source heat pump mechanism 5 also includes a pressure controller and a pressure valve;

[0077] The pressure controller is used to collect compressor pressure;

[0078] The pressure valve is located on the pipeline from which the refrigerant flows back from the compressor to the refrigerant coil 7.

[0079] The purpose of this design is to complete cooling and heating through an air source heat pump mechanism, thereby avoiding the need for two sets of refrigerant pipelines and control systems, reducing the difficulty of installation and laying. The pressure controller and pressure valve are mainly used to protect the compressor from overpressure, while the filter absorbs moisture in the refrigerant through desiccants such as molecular sieves to prevent liquid water from freezing at low temperatures and clogging the capillary tube or expansion valve. The expansion valve is used for throttling and pressure reduction.

[0080] It should be noted that the specific refrigerant flow direction changes between cooling and heating modes, therefore it is not included in... Figure 1 The direction of refrigerant flow in the air source heat pump mechanism is marked in the middle.

[0081] In practice, the system operates in two modes: cooling and heating. In cooling mode, the air-source heat pump utilizes the reverse Carnot cycle principle for cooling. Unlike traditional air conditioning systems that use refrigerant, it employs a water circulation system for heat exchange. This process involves energy transfer through the refrigerant's physical state changes: liquid-gas-liquid. First, the low-temperature, low-pressure liquid refrigerant absorbs heat in the heat exchange tank, evaporating into a gaseous state. This process lowers the temperature of the heat exchange liquid within the tank, and the heat is transferred through the top and floor cooling / heating radiant mechanisms, reducing the indoor temperature to the set value. Then, the gaseous refrigerant is compressed by the compressor into a high-temperature, high-pressure gas. During this stage, external electrical energy input significantly enhances the refrigerant's energy quality. Next, the high-temperature refrigerant exchanges heat with the air in the outdoor condenser, releasing heat and condensing into a high-pressure liquid. This process transfers the heat absorbed indoors to the outdoor environment. Finally, the high-pressure liquid refrigerant is throttled and depressurized through the expansion valve, returning to a low-temperature, low-pressure state before entering the heat exchange tank to begin a new cycle.

[0082] In heating mode, the air source heat pump mechanism is based on reverse Carnot cycle heat pump technology. It absorbs low-grade heat energy from the air, compresses and converts it, and then transfers it to the room to provide heating. Specifically, the evaporator of the air source heat pump mechanism, also known as the condenser, absorbs low-grade heat energy from the ambient air through refrigerant, causing the liquid refrigerant to evaporate into a gaseous state. Then, the gaseous refrigerant is pressurized by the compressor, increasing its temperature and transforming into a high-temperature, high-pressure gas. Next, the high-temperature refrigerant enters the condenser, also known as the heat exchange tank, transferring heat to the heat exchange fluid. The refrigerant itself condenses into a liquid state, completing the heat release process. Finally, the liquid refrigerant returns to the evaporator, also known as the condenser, after being depressurized and cooled through the expansion valve, restarting the heat absorption cycle.

[0083] like Figure 3 As shown, the heat exchange tank 4 includes a heat exchange tank shell 6 and a refrigerant coil 7. Other structures such as heat exchange liquid inlets are not shown in the figure. The refrigerant coil 7 is located inside the heat exchange tank shell 6 and is connected to the air source heat pump mechanism. The refrigerant can flow into the refrigerant coil 7 to exchange heat with the heat exchange liquid inside the heat exchange tank shell 6.

[0084] In this embodiment, a storage tank is also included. The storage tank stores heat exchange fluid and is connected to the exchange tank 4 through a pipe. The purpose of this design is that heat exchange fluid will be lost during long-term use. Therefore, a storage tank is set up to replenish the heat exchange fluid in the exchange tank when the capacity of heat exchange fluid in the exchange tank decreases. In rare cases, if there is too much heat exchange fluid in the exchange tank, it can be refluxed.

[0085] In this embodiment, the heat exchange fluid is deionized water or mineral oil, while the refrigerant can be R410A or R32.

[0086] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An indoor dual-end cooling and heating radiant system, comprising an air source heat pump mechanism (5) and an exchange tank (4), wherein the air source heat pump mechanism (5) is located outdoors and can exchange heat with the exchange tank (4), characterized in that, It also includes a top cooling and heating radiation mechanism (2) and a ground cooling and heating radiation mechanism (3); The top cooling and heating radiation mechanism (2) is located on the top of the house (1) and can receive and return the heat exchange liquid in the heat exchange tank (4) to provide cold / heat radiation to the interior space of the house (1) from the top. The ground cooling and heating radiation mechanism (3) is laid on the ground of the house (1) and can receive and return the heat exchange liquid in the heat exchange tank (4) to provide cold / heat radiation to the interior space of the house (1) from the ground.

2. The indoor dual-end cooling and heating radiant system according to claim 1, characterized in that, The top cooling and heating radiation mechanism (2) includes a top radiation end, a top water distributor and a top water valve; The top radiating end is installed on the top of the house (1) and faces the ground of the house (1). A top heat exchange pipe is provided in the top radiating end, and the liquid inlet end of the top heat exchange pipe is connected to the top water separator, and the liquid outlet end of the top heat exchange pipe is connected to the return mechanism. The top water valve is connected to the heat exchange liquid outlet of the heat exchange tank (4) via a pipe; The top water divider is connected to the top water valve.

3. The indoor dual-end cooling and heating radiant system according to claim 2, characterized in that, The top water divider and top water valve are located in the interlayer between the top radiating end and the top of the house (1).

4. An indoor dual-end cooling and heating radiant system according to claim 2, characterized in that, The ground cooling and heating radiation mechanism (3) includes a ground radiation end, a ground water distributor and a ground water valve; The ground radiant end is laid on the ground of the house (1) and faces the top of the house (1). A ground heat exchange pipe is provided in the ground radiant end, and the liquid inlet end of the ground heat exchange pipe is connected to the ground water distributor, and the liquid outlet end of the ground heat exchange pipe is connected to the return mechanism. The ground water valve is connected to the heat exchange liquid outlet of the heat exchange tank (4) via a pipeline; The ground water distributor is connected to the ground water valve.

5. An indoor dual-end cooling and heating radiant system according to claim 4, characterized in that, The ground water distributor and ground water valve are located in the interlayer between the ground radiating end and the ground of the house (1).

6. An indoor dual-end cooling and heating radiant system according to claim 5, characterized in that, The reflux mechanism includes a reflux pipe, a check valve, a circulation pump, and a ball valve, and the check valve, circulation pump, and ball valve are sequentially arranged on the reflux pipe along the flow direction of the heat exchange liquid; The top heat exchange pipe and the ground heat exchange pipe are connected to one end of the return pipe, and the other end of the return pipe is connected to the heat exchange liquid return port of the exchange tank (4).

7. An indoor dual-end cooling and heating radiant system according to claim 1, characterized in that, The air source heat pump mechanism (5) includes a compressor, a condenser, a storage tank, and a filter; The refrigerant storage device is used to store refrigerant and is connected to the filter via a pipe; The filter is connected to the refrigerant coil (7) inside the exchange tank (4) via a pipe; One end of the compressor is connected to the refrigerant coil (7) via a pipe, and the other end is connected to the condenser via a pipe; The condenser is connected to the media storage tank via a pipe.

8. An indoor dual-end cooling and heating radiant system according to claim 7, characterized in that, The air source heat pump mechanism (5) also includes a pressure controller and a pressure valve; The pressure controller is used to collect compressor pressure; The pressure valve is located on the pipeline from which the refrigerant flows back from the compressor to the refrigerant coil (7).

9. An indoor dual-end cooling and heating radiant system according to any one of claims 1 to 8, characterized in that, It also includes a storage tank containing heat exchange liquid and connected to the heat exchange tank (4) via a pipeline.

10. An indoor dual-end cooling and heating radiant system according to claim 9, characterized in that, The heat exchange fluid is deionized water or mineral oil.

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